gcc/testsuite/gfortran.dg/interface_28.f90

   1 ! { dg-do compile }
   2 !
   3 ! PR 36947: Attributes not fully checked comparing actual vs dummy procedure
   4 !
   5 ! Original test case by Walter Spector <w6ws@earthlink.net>
   6 ! Modified by Janus Weil <janus@gcc.gnu.org>
   7
   8 module testsub
   9   contains
  10   subroutine test(sub)
  11     interface
  12       subroutine sub(x)
  13         integer, intent(in), optional:: x
  14       end subroutine
  15     end interface
  16     call sub()
  17   end subroutine
  18 end module
  19
  20 module sub
  21   contains
  22   subroutine subActual(x)
  23     ! actual subroutine's argment is different in intent
  24     integer, intent(inout),optional:: x
  25   end subroutine
  26   subroutine subActual2(x)
  27     ! actual subroutine's argment is missing OPTIONAL
  28     integer, intent(in):: x
  29   end subroutine
  30 end module
  31
  32 program interfaceCheck
  33   use testsub
  34   use sub
  35
  36   integer :: a
  37
  38   call test(subActual)  ! { dg-error "INTENT mismatch in argument" }
  39   call test(subActual2)  ! { dg-error "OPTIONAL mismatch in argument" }
  40 end program